Apparatus for manufacturing a substrate means for an optical rec

Details Apparatus for manufacturing a substrate means for an optical rec Apparatus for manufacturing a substrate means for an optical rec

1993-11-18

1995-05-23

Chin, Peter

Coating apparatus

Work holders, or handling devices

Gripper or clamped work type

118500, 269 47, 369292, B05C 1302

Patent

active

054171822

ABSTRACT:
An apparatus for manufacturing a substrate of an optical recording disk having a transfer layer of uniform thickness. The apparatus forcibly deforms a portion of the substrate ranging from the center portion to an outer circumferential portion so as to provide a substantially conical-convex shape prior to the formation of the transfer layer. The apparatus forms the transfer layer onto a surface side of the conical-convex shape of the substrate.

REFERENCES:
patent: 4549922 (1985-10-01), Oishi et al.
patent: 4577307 (1986-03-01), Woods et al.
patent: 4708041 (1987-11-01), Granger et al.
patent: 4723648 (1988-02-01), Hamatani
patent: 4797873 (1989-01-01), Nobutani

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